Registration of ‘Bonanza’ Big Bluestem

‘Bonanza’ big bluestem (Andropogon gerardii Vitman.) (Reg. no. CV-13, PI 641701) was released in May 2004 by the USDA-ARS and the Agricultural Research Division, Institute of Agriculture and Natural Resources, University of Nebraska. It is a broadly adapted perennial warm-season grass cultivar that produces forage with high in vitro dry matter digestibility (IVDMD) and improved animal gains in comparison to its parent cultivar when utilized by beef cattle in well-managed grazing systems. Bonanza was tested as Pawnee C3

Registration of ‘Goldmine’ Big Bluestem

‘Goldmine’ big bluestem [Andropogon gerardii Vitman.] (Reg. no. CV-14, PI 641702) was released in May 2004 by the USDA-ARS and the Agricultural ResearchDivision, Institute of Agriculture and Natural Resources, University of Nebraska. Goldmine is a perennial warm-season grass cultivar that produces forage with moderately improved in vitro dry matter digestibility (IVDMD), protein concentration, and improved forage yields in some hay management systems. Animal gains from Goldmine were greater than its parent cultivar when utilized by beef cattle in well-managed grazing systems. Goldmine was tested as Kaw C3

Evaluation of Four Intermediate Wheatgrass Populations under Grazing

The grazing season in the central and northern Great Plains could be extended by use of adapted cool-season grass pastures for spring and fall grazing to augment the native warm-season range. A grazing trial was conducted to evaluate the forage quality of four intermediate wheatgrass [Thinopyrum intermedium (Host) Barkw. & D.R. Dewey] populations for use in forage-livestock systems. The cultivars Slate and Oahe and two populations selected for improved IVDMD, ‘Manska’ and NE TI 1, were evaluated. Each population was seeded in the fall of 1987 in three replicated 0.4-ha pastures arranged in a randomized complete block design. Pastures were stocked with three beef yearlings for 28 d in spring 1989 and 42 d in spring 1990 to provide a stocking rate of 7.5 steers ha-’. Duration of grazing was shorter in 1989 because of inadequate soil moisture. Average daily gain (ADG) and gain per hectare were higher (P 5 0.10) in 1989 than 1990, despite the lower (P 5 0.10) forage availability and lesser number of grazing days in 1989. Steers grazing Manska in 1989 gained 1.59 kg d-’, compared with 1.42,1.27, and 1.43 for Oahe, Slate, and NE TI 1, respectively. There were no differences (P \u3e 0.10) in ADG or gain per hectare among populations in 1990. The improvement in ADG resulted in 30 to 65 kg more gain per hectare from Manska compared with the other populations in l989. These results demonstrate the excellent quality of intermediate wheatgrass for grazing livestock and the impact that modest improvements in forage quality can have on animal performance

Evaluation of Four Intermediate Wheatgrass Populations under Grazing

The grazing season in the central and northern Great Plains could be extended by use of adapted cool-season grass pastures for spring and fall grazing to augment the native warm-season range. A grazing trial was conducted to evaluate the forage quality of four intermediate wheatgrass [Thinopyrum intermedium (Host) Barkw. & D.R. Dewey] populations for use in forage-livestock systems. The cultivars Slate and Oahe and two populations selected for improved IVDMD, ‘Manska’ and NE TI 1, were evaluated. Each population was seeded in the fall of 1987 in three replicated 0.4-ha pastures arranged in a randomized complete block design. Pastures were stocked with three beef yearlings for 28 d in spring 1989 and 42 d in spring 1990 to provide a stocking rate of 7.5 steers ha-’. Duration of grazing was shorter in 1989 because of inadequate soil moisture. Average daily gain (ADG) and gain per hectare were higher (P 5 0.10) in 1989 than 1990, despite the lower (P 5 0.10) forage availability and lesser number of grazing days in 1989. Steers grazing Manska in 1989 gained 1.59 kg d-’, compared with 1.42,1.27, and 1.43 for Oahe, Slate, and NE TI 1, respectively. There were no differences (P \u3e 0.10) in ADG or gain per hectare among populations in 1990. The improvement in ADG resulted in 30 to 65 kg more gain per hectare from Manska compared with the other populations in l989. These results demonstrate the excellent quality of intermediate wheatgrass for grazing livestock and the impact that modest improvements in forage quality can have on animal performance

Internet Economics: An Annotated Bibliography

This is an annotated bibliography of recent works (papers, articles, and book chapters) in the burgeoning field of Internet economics. Publications on Internet economics were sought through traditional research means and by searching the World Wide Web. An introduction to the bibliography explains how the references were sought and identifies key themes that emerge from the research, particularly as they relate to media scholarship. Entries are listed in alphabetical order. Each citation is accompanied by an annotation of at least a few sentences that summarize the cited work's key points as they relate to Internet economics.

Continuous vs Rotational Stocking of Warm-Season Grasses at Three Stocking Rates

Pastures containing big and little bluestem, indiangrass, sideoats gramu, and switchgrass were stocked with 2.1, 2.7, and 3.3 yearling steers/acre from June to August. Continuous stocking and six-paddock rotations were used. Grazing terminated early on most continuously stocked pastures due to low herbage mass. As stocking rate increased, ADG declined; continuous Stocking produced highest (1.6 lbs) and lowest(. 69 lbs) ADG. Gai1n/acre was unaffected by stocking rate using rotational stocking (224 lbs/acre) but declined,from 250 to 133 lbs/acre as stocking rate increased using continuous stocking. Continuous stocking caused big bluestem to replace little bluestem and indiangrass and caused a slight decrease in stands

Forage Quality and Animal Performance of Steers Grazing Smooth Bromegrass/Legume Pastures

A trial was conducted to evaluate effects of interseeding legumes into smooth bromegrass pastures on animal performance and forage quality. Animal gains on legume/bromegrass treatments were higher than bromegrass alone. Laboratory analysis of diet samples collected from ruminally fistulated steers indicated no difference in the undegradable intake protein content of pastures. Legume/bromegrass treatments had higher IVDMD than the control. Therefore, the increases in gain are attributed to increased energy of legume/bromegrass diets and not undegradable protein content

Registration of ‘Goldmine’ Big Bluestem

‘Goldmine’ big bluestem [Andropogon gerardii Vitman.] (Reg. no. CV-14, PI 641702) was released in May 2004 by the USDA-ARS and the Agricultural ResearchDivision, Institute of Agriculture and Natural Resources, University of Nebraska. Goldmine is a perennial warm-season grass cultivar that produces forage with moderately improved in vitro dry matter digestibility (IVDMD), protein concentration, and improved forage yields in some hay management systems. Animal gains from Goldmine were greater than its parent cultivar when utilized by beef cattle in well-managed grazing systems. Goldmine was tested as Kaw C3

Registration of ‘Bonanza’ Big Bluestem

‘Bonanza’ big bluestem (Andropogon gerardii Vitman.) (Reg. no. CV-13, PI 641701) was released in May 2004 by the USDA-ARS and the Agricultural Research Division, Institute of Agriculture and Natural Resources, University of Nebraska. It is a broadly adapted perennial warm-season grass cultivar that produces forage with high in vitro dry matter digestibility (IVDMD) and improved animal gains in comparison to its parent cultivar when utilized by beef cattle in well-managed grazing systems. Bonanza was tested as Pawnee C3